參數(shù)資料
型號: MC68EC060RC66
廠商: Freescale Semiconductor
文件頁數(shù): 109/128頁
文件大小: 0K
描述: IC MPU 32BIT 66MHZ 206-PGA
標準包裝: 10
系列: M680x0
處理器類型: M680x0 32-位
速度: 66MHz
電壓: 3.3V
安裝類型: 通孔
封裝/外殼: 206-BEPGA
供應商設備封裝: 206-PGA(47.25x47.25)
包裝: 托盤
Memory Management Unit
4-12
M68060 USER’S MANUAL
MOTOROLA
have an encoding of U-bit = 0, M-bit = 1, and PDT field = 01 or 11. This encoding indicates
that the page descriptor is resident, not used, and modified. The processor’s table search
algorithm never leaves a descriptor in this state. This state is possible through direct manip-
ulation by the operating system for this specific instance.
4.2.2 Descriptors
There are three types of descriptors used in the translation tables, root, pointer, and page.
Root table descriptors are used in root-level tables and pointer table descriptors are used in
pointer-level tables. Descriptors in the page-level tables contain either a page descriptor for
the translation or an indirect descriptor that points to a memory location containing the page
descriptor. The P-bit in the TCR selects the page size as either 4 or 8 Kbytes.
4.2.2.1 TABLE DESCRIPTORS. Figure 4-10 illustrates the formats of the root and pointer
table descriptors.
4.2.2.2 PAGE DESCRIPTORS. Figure 4-11 illustrates the page descriptors for both
4-Kbyte and 8-Kbyte page sizes. Refer to Section 5 Caches for details concerning caching
page descriptors.
31
9876543210
POINTERTABLE ADDRESS
XXXXX
U
W
UDT
ROOT TABLE DESCRIPTOR (ROOT LEVEL)
31
9876543210
PAGETABLE ADDRESS
XXXXX
U
W
UDT
POINTER TABLE DESCRIPTOR (POINTER LEVEL)
Figure 4-10. Table Descriptor Formats
31
12
11
10
9876543210
PHYSICAL ADDRESS
UR
G
U1 U0
S
CM
M
U
W
PDT
4K PAGE DESCRIPTOR (PAGE LEVEL)
31
13
12
11
10
9876543210
PHYSICAL ADDRESS
UR UR
G
U1 U0
S
CM
M
U
W
PDT
8K PAGE DESCRIPTOR (PAGE LEVEL)
31
76543210
DESCRIPTOR ADDRESS
PDT
INDIRECT PAGE DESCRIPTOR (PAGE LEVEL)
Figure 4-11. Page Descriptor Formats
相關PDF資料
PDF描述
MC7447AVU1420LB IC MPU RISC 32BIT 360-BGA
MC8640DTVU1000HE IC MPU DUAL CORE E600 1023FCCBGA
FH40-60S-0.5SV CONN FPC/FFC 60POS .5MM VERT SMD
MC8640DTHX1000HE IC DUAL CORE PROCESSOR 1023-CBGA
MC7457RX1000NC IC MPU RISC 32BIT 483FCCBGA
相關代理商/技術參數(shù)
參數(shù)描述
MC68EC060RC75 功能描述:微處理器 - MPU 32B W/ CACHE RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68EC060ZU50 功能描述:IC MPU 68K 50MHZ 304-TBGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微處理器 系列:M680x0 標準包裝:1 系列:MPC85xx 處理器類型:32-位 MPC85xx PowerQUICC III 特點:- 速度:1.2GHz 電壓:1.1V 安裝類型:表面貼裝 封裝/外殼:783-BBGA,F(xiàn)CBGA 供應商設備封裝:783-FCPBGA(29x29) 包裝:托盤
MC68EC060ZU66 功能描述:微處理器 - MPU 32B W/ CACHE RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68EC060ZU75 功能描述:微處理器 - MPU 32B W/ CACHE RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MC68EN302 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Integrated Multiprotocol Processor with Ethernet